“”God Our Mother”, supports moving beyond the Scriptural formulation of God as Father...”
Well, he can go move on to worshiping whatever pagan goddess he wants, but that won’t change the nature of God.
Most Christians in the West are used to the liturgy referring to God as Father, but there is actually a region around Edessa (modern-day Syria) that historically has used feminine imagery for God in its liturgy...and has, ever since the first couple of centuries Anno Domini.
I don't know a whole lot of Christians who think that God has a sex (even as we describe him as male and using male pronouns), and I have a feeling that many American Christians avoid feminine language when talking about God because of connotations of feminist ideology rather than because they believe God is 'literally' male.